Home / 1,246.07-1,867.47-515.45

Finding the Fourth Proportional to 1,246.07, 1,867.47 and 515.45

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Solution

The fourth proportional to 1,246.07, 1,867.47 and 515.45 is: 772.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.07 : 1,867.47 = 515.45 : x
  2. Step 2: Convert to fraction form
    1,246.07/1,867.47 = 515.45/x
  3. Step 3: Cross multiply
    1,246.07x = 1,867.47 × 515.45
  4. Step 4: Simplify right side
    1,246.07x = 962,578.07
  5. Step 5: Solve for x
    x = 962,578.07/1,246.07
  6. Step 6: Final answer
    x = 772.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.